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AWS BAg-20 vs. 4115 Aluminum

AWS BAg-20 belongs to the otherwise unclassified metals classification, while 4115 aluminum belongs to the aluminum alloys. There are 17 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AWS BAg-20 and the bottom bar is 4115 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 93
70
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 35
26
Tensile Strength: Ultimate (UTS), MPa 160
120 to 220

Thermal Properties

Latent Heat of Fusion, J/g 150
420
Melting Completion (Liquidus), °C 770
640
Melting Onset (Solidus), °C 680
590
Specific Heat Capacity, J/kg-K 340
900
Thermal Expansion, µm/m-K 21
23

Otherwise Unclassified Properties

Density, g/cm3 8.6
2.7
Embodied Carbon, kg CO2/kg material 30
8.1
Embodied Energy, MJ/kg 480
150

Common Calculations

Stiffness to Weight: Axial, points 6.0
14
Stiffness to Weight: Bending, points 17
50
Strength to Weight: Axial, points 5.1
12 to 23
Strength to Weight: Bending, points 7.6
20 to 30
Thermal Shock Resistance, points 5.9
5.2 to 9.9

Alloy Composition

Aluminum (Al), % 0
94.6 to 97.4
Copper (Cu), % 37 to 39
0.1 to 0.5
Iron (Fe), % 0
0 to 0.7
Magnesium (Mg), % 0
0.1 to 0.5
Manganese (Mn), % 0
0.6 to 1.2
Silicon (Si), % 0
1.8 to 2.2
Silver (Ag), % 29 to 31
0
Zinc (Zn), % 30 to 34
0 to 0.2
Residuals, % 0 to 0.15
0 to 0.15